Diamonds are precious, lustrous gemstones made of highly-compressed carbon. Diamonds are one of the hardest materials known. Diamonds can be found in lots of different places in the world, however they are usually found in India, Brazil and Sub Saharan Africa. Today, the majority of Diamonds are mined in South Africa. South Africa has plenty of Diamond pipes or hardened lava streams. The clearest Diamonds are usually worth the most and a flawless clear Diamond is usually stated as a blue- white because they reflect back a pure blue white light to the viewer. Colors of diamonds range from colorless, yellow, orange, brown, to almost black. Rarer colors are red, blue, green, and purple; these colors (called fancies) are quite valuable.